Dual strip feeding mechanism for calculating machines



July 1, 1958 G. J. UHLIG DUAL STRIP FEEDING MECHANISM FOR CALCULATING MACHINES Filed Aug. 5, 1952 '7 Sheets-Sheet l I INVHVTOR.

g ZZ/ Julyl, 1958 G. J. UHLIG I 2,841,265

DUAL STRIP FEEDING MECHANISM F OR CALCULATING MACHINES Filed Aug. 5, 1952 7 Sheets-Sheet 2 iDQiD IN VEN TOR.

' rrze s July 1, 1958 G. J. UHLIG 2,841,265

DUAL STRIP FEEDING MECHANISM FOR CALCULATING MACHINES Filed Aug. 5, 1952 7 Sheets-Sheet 3 G. J. UHLIG July 1, 1958 DUAL STRIP FEEDING MECHANISM FOR CALCULATING MACHINES 7 Sheets-Sheet 4 Filed Aug. 5, 1952 IN VEN TOR.

July 1, 1958 2,841,265

DUAL STRIP FEEDING MECHANISM FOR CALCULATING MACHINES G. J. UHLIG '7 Sheets-Sheet 5 Filed Aug. 5, 1952 mmvrog.

y G. J. UHLIG 2,841,265

DUAL STRIP FEEDING MECHANISM F OR CALCULATING MACHINES Filed Aug. 5, 1952 7 Sheets-Sheet 6 July 1, 1958 v G. .J. UHLlG 2,841 265 DUAL STRIP FEEDING MECHANISM FOR CALCULATING MACHINES 7 Sheets-Sheet 7 Filed Aug. 5, 1952 IN VEN TOR.

DUAL STRIP FEEDD'JG MECHANlSl /i FOR CALCULATING MACHINES A an.

George J. Ulilig, Park Ridge, 11L, assignor to Victor ing Machine (30., Chicago, 111., a corporation'of Illinois Application August 5, H52, Serial No. 302,710

9 Claims; (Cl. '197133) The invention relates generally to multiple printing and ticket issuing mechanisms for calculating machines of a type suitable for use by banking tellers and similar places where it is desirable to make several records of a transaction, and more particularly when it is desirable to hand a receipt to a customer. The inventicn may be employed with any type of calculating machine, and is operable to print totals, for example, on a customers deposit slip on a ticket which may be used in other bookkeeping transactions, and upon an audit strip.

it is thus the primary object of my invention to provide a mechanism capable of making multiple records of transactions and issuing preprinted tickets, and also making a record on a slip which may be inserted prior to the printing operation.

Another object is to provide'a mechanism for automatically advancing the ticket strip, independently of the number of items printed on a given ticket, so that the lower edge of the ticket comes into accurate register with the top of the tear strip. 1

Another object is to' provide mechanism for independently advancing an audit strip and a ticket strip one or two spaces.

Other objects and advantages will become apparent from the following description; reference being had to the accompanying drawings, in which Fig. l is a vertical sectional View, taken on the line 1--l of Fig. 2, showing the rearward portion of a calculating machine;

Fig. 2 is a plan view of the rearward-portion of the calculating machine, with the casing removed;

Figr2a is a fragmentary side elevational view showing a portion of the control key stems and signal and ejection control links;

Fig.- 3 is a right side elevationsl view of the paper feed ing mechanism, and particularly of the means for releasing the feed rolls;

Fig. 4 is a fragmentary sectional View, taken on the line 44 of Fig. 2;

Fig. 5 is a fragmentary sectional view, taken on the line 5-5 of Fig. 2;

Fig. 6 is a view similar to Fig. 5, showing the ticket ejecting mechanism;

Fig. 7 is a fragmentary sectional View, taken on the line 77 of Fig. 2, showing the mechanism for singleor double spacing of the ticket to be issued;

8 is a fragmentary sectional view, taken on the line 8'8 of Fig. 2, and showing particularly the mechanism for preventing advancement of the item counter upon repeat operations of the machine;

Fig. 9'is-a fragmentary sectional view similar to Fig. 8, showing the parts in displaced position;

Fig. 10 is a fragmentary vertical sectional View, taken on the line 1ll'1tl of Fig. 2, showing the mechanism for single or double spacing the audit strip;

Fig. 11 is an elevational view taken on the line ll11 of Fig. l0';"and' Fig. 12 is a rear elevational view, partly broken away, of the paper feeding mechanism.

The paper feed and ticket ejecting mechanism shown herein may be employed in any suitable adding machine,

particularly those of the full keyboard type, sometimes 1 referred to as a bookkeeping machine.

The machine has the customary bank of numeral keys;

2s, a repeat key 22, and a plurality of transaction desig-;.

nating keys 24, and control keys 26.

As shown in Fig. l, the machine has a bellcrank 28 and type bar 36 for each bank'of numeral keys, for the transaction designating keys 24, and for keys 26 controlling the character of the machine operation; These bellcranks 28 are pivoted upon a rod 30 and have toothedi wise, or away from the platen 44 with which the type cooperate. The type bars are adapted to be swung clockwise, when printing is to be effected, by a printing lever as pivoted on a rod 48. Each of the printing levers 46 has a U-shaped end portion 50 to provide an additional bearing for the lever. The lower end of each of the printing levers 46 has a sidewardly extending lug 52 which is in engagement with an ear 54 formed on a printing hammer 56 pivoted on a shaft 58 and normally urged to swing counterclockwise by a relatively strong tension spring 69. Each of the hammers 56 is held in cocked position by a hammer lock 62 pivoted on a rod 64 and normally urged to swing clockwise by a suitably anchored tension spring 66.

The previously mentioned rectifier or alignment bar 34 is carried by a pair of arms 68 secured to a shaft 70. This shaft 70 is turned clockwise just prior to the-printing portion of the cycle in order to align the type. The rod 1 64 is carried by the arms 68 so that as the rectifier bar 34 moves into engagement with the spaces between the teeth 32, the hammer locks 62 also move rearwardly,

swinging counterclockwise on the rod 64. Each of the hammer locks has a sidewardly projecting lug 72 which is adapted to engage one of the teeth 32 whenever the as sociated bellcrank 28 is displaced from its zero position. When the lug strikes the end of one of the teeth 32, it

is swung counterclockwise and its pointed extremity 74 is disengaged from the complementary notch 76 formed in the hammer 56, thus permitting the spring 60 to swing a the hammer 56 counterclockwise, and through the engagement of the ear 54 with the lug 52 on the printing lever 46, forces the latter clockwise and thereby causes its end portion 78 to cammingly engage the rearward edge of the type bar 36 and force the latter toward the platen to effect the printing impression. Each of the hammer locks 62 has a leftwardly projecting ear 79 lying in front of the lug 72 of the adjacent higher order hammer lock to assure printing of significant Zeros.

As previously indicated, printing is effected upon an audit strip, upon a ticket which is ejected from the machine, and upon a ticket which may be inserted in a chute between two ribbons.

The audit strip 89, together with a strip of expandable thin carbon paper, are in the usual roll carried by a rod 82, and are fed from the roll above a rounded guide porin pressure contact with the audit strip 80; After passing Patented July' 1, 1958" i V V t p. n the feed rollers 86, the audit strip passes between the platen and the cylindrical portion of the papershield 85, it being understood that this shield is apertured to receive the feedrollers 86.

After passing the platen 44, the audit stripa'nd carbon paper pass between a marking table 94 and a suitably formed tear strip 96. ,The upper end of the paper marking table'94 has its central portion 98 turned rearwardly in a smooth curve, while at its ends it has a pair of ears 100 (Figs. 1 and 2). The audit strip then passes 'over the supply roll and is wound 'upon a rewind r ei162 rotatable on a shaft 104 and having flanges 106.

As best shown in Fig. 4, the shaft 104 has a sprocket 108 frictionally secured thereto so as to apply tension to the audit strip being rewound, the sprocket 108 being driven by means of .a chain 110 meshing with a sprocket 112 secured to the right end'of the platen 44. if desired,

strip toward the platen 44, so that these tickets then pass between a section 124 of an inking ribbon and the carbon paper which overlies the audit strip. The tickets are diverted'rearwardly between upper end portions 123 of the fingers 122, s oas to pass behind the tear strip. 96 The tickets, are severed by pulling them forwardly and .to the side across theserrated upper'edge of the tear strip.

Feedingof the tickets is accomplished by a plurality of knurled portions 126 forming part of a shaft 129, which is positively rotated, as will be described hereinafter. made of rubber or thelike, press the tickets 114against the knurled portions 126 so asto provide nonslipping frictional engagement between the tickets and the knurled portions 126. It will benoted that the sheets 118 and 120'are provided with suitable openings through which the knurled portions-126 andthe feed rolls 130 project for engagement with the tickets 1 14.

Immediately in front of the paper guide fingers .122

there is: a chute 132 into which an additional ticket or slip may be inserted so that a printing impression may.

pressing against a. second j be made thereon by the type section 134 of the inking ribbon.

The platen 44 is rotated either for a single space or double space through a mechanism best illustrated in Figs. and 10. As shown in Fig. 5, the main rockshaft.

136 of the machine has an arm 138 keyed thereto. this armbeing pivotally connected to a link 140 extending rearwardly and having its rearward end pivoted to a lever 142 by a stud 144. As is customary, thcmain shaft 136 is oscillated clockwise from the position shown in Fig. 8 to the position shown in Fig. 9, and then. counterclockwise to return to the position of Fig. 8, once during each operating cycle of the machine. The lever 142 is secured to a bushing 145 which is rotatable. on a stud 146. An arm 148 is also brazed to the bushing 145 and is pivotally connected to a link 150, the upper end ofwhich carries a pin 152 (Figs. and 11). The pin 152 pro jects through a pair of arms 154 which are secured to a shaft 156, these two arms being brazed to a spacing bush ing 158 which is pinned to the shaft 156. V

Also pivoted to the pin 152 is a link'160 having an elongated slot 162 (Fig. 10) in the upper end thereof. A paper feed lever 164, pivoted on a stud 166, has a roller-stud 168 projecting sidewardly into the slot 162.

A plurality of' spring biased pressure rolls 130,

From the foregoing, it will appear that as the main shaft 136 moves clockwise (Fig. 5), the lever 142 will likewise be swung clockwiseflhereby, through a chain of pivoted links and levers, shown as the lever 148 and links 150 and 160, permitting the feed lever 164 to swing counterclockwise due to'the force applied by the spring 176, and thus permitting .the .tooth of the pawl 172 to pass over two teeth of the ratchet wheel 174, at which time a shoulder 178 of the feed lever 164 engages a stop stud 180. The feed lever 164 has a second shoulder 182 which may engage a stud insertable in a hole 184 in the left-hand end plate l86." The spacing'between the stud which maybe inserted in the hole 184 and theshoulder 182 is such that the pawl 172 will be arr'es'ted after it has passed over only one of the teeth of the ratchet wheel 174 so as to feed the audit strip only one space instead of two. The feeding isefiected during the return stroke of the main shaft, and during such movement the link 160 willbe raised to swing the feed lever 164 clockwise andthus move'the pawl 172 downwardly, in this case two spaces. i

The lost motion provided by the elongated slot 162 and the stud 168 free to slide therein, is provided to make certain that the type are no longer in contact with the ticket when the pawl commences rotating the ratchet wheel 174, and hence the platen 44.

V The feeding of the strip of tickets is effected in a man- ;ner somewhat similar to the feeding of the audit strip, the mechanism provided therefor being best shown in Fig. 7 A link 188 similar to the link 160 is likewise pivoted to the pin 152 and has an elongated s1ot.189 at its upper end. A second feed lever 190,-pivoted on a stud V is secured to a bushing 202 freely rotatable-upon the 192, has a stud 194 projecting s'idewardly into the elongated slot 189; the other end of'the lever'190. has a pawl 196 pivoted thereon, the pawl being biased for counterclockwise movement by a suitably anchored tension spring 198. The pawl 196 engages a ratchet wheel 200'which platen shaft 175. 'The'number of teeth of thewheel 200 over which the pawl passes is limited by the engagement of the feed lever 190 with a stud 195 which may be se- 7 cured'in a hole197if two space feeding is desired.

The other end of the lever 164 has a stud upon which 7 V As best shown'in Figs. Sand 12, a pinion 204 is fixed -to the bushing 202, being spaced from the ratchet wheel 200 by a suitable separator 206 so that the ratchet wheel 200 and pinion 204 rotate together with the bushing 202.

Also secured to the bushing ,202'is a thumbwheel-208 having its edge knurled.

As shown in Fig. 6, the pinion 210 mounted for rotation .on a shaft 166. A pinion 212 is secured to shaft 129 which, it will b e recalled, has the knurled feed roll portions 126. Thus upon any adding operation the ticket strip 114 will be advanced a short distance of one or two spaces, depending upon whether the stop stud is in the position shownin Fig.7, or whether it is secured in the hole 197.

Upon completion of the printing upon a particular ticket, it is necessary to rotate the'knurled paper feed rolls 126 through a substantial angle in order to raise the printed ticket so that its'lower edge will lie at the upper edge of the tear strip 96. Depending upon the number of items which have been printed on a particular ticket, the ticket will have to be moved a substantial distance in order to secure ejection of the printed ticket to the mentioned position in which it may readily be severed from the strip' of tickets. The mechanism for accomplishing this is best shown in Fig. 5.

It will be recalled that upon the forward stroke of the main shaft a lever 142 is moved clockwise. This lever is provided with a stud. 214 which projects into an arcuate slot 216 in a link 218.. The arcuate travel .of the lever142 is such that under normal circumstances the stud 214 rides freely in the slot 216 without moving the link 218. V

As shown in Fig. 2a, each of the control keys 26 which, I

204 meshes with a gear t upon operation, is intended to cause the ejection of a ticket, has a stud 26a, or a screw 26b, which, upon depression of the key, swings a hooked link 220 downwardly so that the hook portion 220a thereof lies in front of a stud 221 on an arm 222. The rearward end of the link 22%) is pivoted to an arm 223 secured to a shaft 226. The arm 222 is pivoted on a stud 224 and has'a generally triangularly-shaped slot 230 formed therein. A pin 228 on an arm 229 fixed to a rock shaft 227, projects into the slot 239. At the start of a machine cycle, the rock shaft 227 rotates counterclockwise (Fig. 2a) and shortly thereafter the pin 228 engages in the upper end portion of the slot 230 and, upon continued rotation of the rock shaft, swings the arm 222 clockwise. Thus, the link 22! is pulled forwardly, rotating the shaft 226 counterclockwise (Fig. 2a). During the latter portion of a machine cycle, the arm 222 is returned to the position shown in Fig. 2a, and upon unlatching of the depressed keys 26,- the link 220 is returned to the position shown in Fig. 2a by its return spring '225.

The shaft 226 extends to the left-hand side of the machine and, as best shown in Fig. 5, carries a long arm 232 which at it rearward end has a spring yielding pawl 234"pivoted on a stud 236. The pawl has a forwardly projecting portion 238'which normally rests' against a stop stud 2413. When'the'shaft 226 is rotated clockwise (as seen in Fig. 5), the rearwardly extending portion of the pawl 234 engages a stud 242, which'projects sidewardiy from link 21S 'and'raises this link. It will be understood that the timing is such that when the shaft 226 commences rotating clockwise, the arm 142 is well advanced in its clockwise movement.

T he-link 218 has its upper end pivotally connected by a stud 243 to a three-armed lever 244 pivoted on shaft 166. This lever 244 is biased by a suitably anchored tension spring. 246 to have one of its arms 248 in engagement with a stop rod 250. A wipe pawl 252 is pivotally securedto the arm 248 and is urged to swing clockwise by a tension spring 254.

The gear 210'has" four arcuately spaced studs 256 a substantially horizontal plane passing through the centerline of shaft 166 so that it operates to hold the three-armed lever 244 in either of itsitwo extreme positions, as shown in Figs. 5 and 6 respectively.

Thug-during the return or retractile stroke, as the shaft 146 and lever 142" swing counterclockwise from the-positiomshown-in Fig; 6 to the position'shown in Fig. 5, the stud 214 will abut the lower end of the arcuate slot 216 and pull the link 218d0wnwardly, thereby rotating the'three-ar'med lever 244 clockwise and, through the engagement ofthe pawl 252 with one of the four studs 256, cause the gear 210 to rotate counterclockwise a distance sufficient to complete a 90 rotation of the gear 210. It will'be understood that if the gear 210has-previously been rotated clockwise by the line spacing, as previously described, the pawl 252 will travel until it meets one of the studs 256, and thereafter complete the rotation of the gear 210 through a 90 angle. To hold the pawl 252 in engagement with one of the studs 256, it is provided with'a stud 262 which abuts against the edge of the arm 248 'of the three-armed lever 244;" As the rotation of the gear 210 is completed, an can 264 on the pawl 252 engages the stop rod 250 and the pawl is thus disengaged from the stud 256 with which it was in'engagement. As a result of such rotation of the gear 210, the knurled paper feed rollers 126 are rotated exactly through the required number of degrees to advance the strip'of tickets 114 so'that' the perforated folding-line thereofis in registry-with the upper edge of the tear strip 96, and this advancement of the ticket strip is accomplished irrespective of how many items have previously been imprinted on the ticket or tickets.

The machine includes means for imprintng the month, day, and year, an identification symbol, and a serial number. This means is shown in Figs. 2, 5, 6, 8, and 9, and comprises a plurality of type wheels 270 carried on a shaft 272, the latter being carried by a pair of arms 274. These arms are pivoted on a post 276 and are normally urged to swing counterclockwise (Fig. 5) so as to bring the type in engagement with the platen by relatively strong springs 278. Such movement of the typewheels 270 toward the platen is normally prevented by an arm 28!) secured to shaft 156. This arm normally is positioned behind a stud 282 secured to one of the type carrier levers 274. Movement of the type toward the platen is also initially prevented by an arm 284 secured to shaft 226. The rearward and downwardly projecting end portion of this arm normally lies in front of stud 286 (Fig. 5) secured'to the lower end of one of the type carrying levers 274. The arm 284 has a sidewardly projecting stud 288 which overlies an arm 290 of a three-armed pawl 292 pivoted on a stud 310. A second arm 294 of the three-armed pawl 292 has a shoulder 2% which is adapted to be moved in front of the stud 286 by a tension spring 29% when the arm 284 is swung clockwise (Fig. 5) during the initial portion of an operating cycle following the depression of one of the control keys 26.

An arm 3% (Fig. 8) is secured to main shaft 136 and its outer end carries a roller 3 52 which, toward the end of the forward stroke of the machine, engages in an open end slot 3%4 in a bellcrank 3%. This bellcrank is pivoted on a stud 3% and its upwardly extending arm carries the stud 31 3 upon which the three-armed pawl 292 is pivoted. At the upper end of the upwardly extending arm of bellcrank 3&6 there is a roller 312 which operates in an elongated slot 314 formed in a lever 316. The lever 316 is secured to a shaft 53 and has a stud 318 normally overlying a shoulder 32% of a pawl actuating link 322, the lower end of which is guided by the shaft 276 which'projects through an elongated slot 324 in the link 322. The upper end of the link is pivotally connected to an arm 32% which carries the usual pawl for actuating the item counter for imprinting the serial number.

When the machine is operated after one of the control keys 26 is depressed, the shaft 226 will rotate clockwise (Fig. 8) and thus raise arm 284 so that the stud 28 5 may move to the position in which it is shown in Fig. 9, and thereby permit spring 293 to swing the threearmed pawl 292 clockwise so that the shoulder 296 will lie in front of the stud 236 and thereby prevent the type wheels 27 9 from moving toward the platen 44. However, as the arm 306 continues counterclockwise rotation to the position shown in Fig. 9, one of the arms of pawl 292 will engage a hub 336 of the arm 3G6 and the shoulder 296 will be moved downwardly to free the stud 286, whereupon the spring 278 will swing the type carrying arms 2'74 counterclockwise to cause a printing impression.

Upon return stroke of the machine after the printing has been effected, the arm 289 is swung clockwise from the position shown in Pig. 9 to the position shown in Fig. 8, and due to its camming surface 281 engaging the roller 282, swings the type carrying levers 274 clockwise, returning them to normal position. Simultaneously therewith, the pawl 292 and arm 284 are restored to their initial positions.

Occasionally it is desirable to print several identical items as, for example, a customer at bank may request duplicate deposit slips. Under these circumstances, a repeat operation of the machine is desired, but advancement of the item counter should not occur. Mechanism is therefore provided which is conditioned by the depres- As best shownin Fig. 8, the guide 336 is provided 7 with a shoulder 346 which is adapted to be engaged by a sidewardly extending lug 348 forming part of a latch 358 mounted for horizontal sliding movement on stud 342 and a stud 352, the latch being normally urged to move forwardly by a suitably anchored tension spring 354; The guide 336 has an open end slot or notch 356 for the reception of a stud 358 carried on a three-armed lever 360 pivoted on a stud 362. A link 364 is pivotally rolls 88 are maintained in pressure contact with the platen or audit strip by tension springs 408. Upon release of the handle 390, it will be restored to its normal position by means of a pair of scissors levers 410 and 411 which are pivoted on a stud 412, and the rearward ends of which are pulled toward one another by atens'ion spring 414 untilthe rearwardly extending endsof both scissors arms 410 and 411 are in engagement with a fixed stud When it is desired to release the feed rolls 130 forthe ticket strip, the handle 390 is moved upwardly,

connected at its ends respectively to one of the arms of the three-armed lever 360 and an arm-366. The arm 366 is secured to a sleeve 368 to which another arm 370 is also secured. At the, end'of the arm 370 there'is a stud 372 for engagement with a shoulder 374 on the item a counter actuating link 322. Thus when the stud 318 moves upwardly away from the shoulder 320, the shoulder 374 will engage the stud 372 and prevent'material upward movement of the actuator link 322. 'It will be understood thatthe pawl carrying member 328 (Figs. 8 and 9) has a bail portion 376 to which one, end of a tension. spring 378 is attached. The other end'of this spring is anchored to a pin 380 on the forwardly projecting arm 382 which forms part of one of the typecarrying levers 274. I

It will therefore appear that whenever themachine'is operated with the repeat key 22 depressed, the'advancement of the item counter will be prevented.

Near the end of each operation of themachine, a rod.

383 is rotated'clockwise (Fig. 5) as the keyboard lock is disengaged. A pawl 384 mounted upon this rod'383 .is therefore swung clockwise and a stud 386 thereon ,engages the lug 348 and pushes the latch slide. 350 rearwardly'to permit the repeat key 22 to be restored by its spring 338. When the repeat key is not depressed, the item counter actuator 322 will move upwardly due to the force applied by the spring 378 through the anns-328 and hail 376. This will occur as the stud 318 on the lever 316moves upwardly out of the path of the shoulder 320. It will be understood that the stud 372 will be out of the path of the shoulder 374 so that the actuator 322 may move the full distance permitted by the elongated slot 324. V 7

On the return stroke of the machine, the lever 316 is number.

swung counterclockwise, whereupon the stud 318 will en-- gage the shoulder 32% and positively move the actuator ment meshing with a mutilated pinion 480 suitably secured to a flattened shaft 402 pivoted in the end plates,

, this shaft being eccentric with respect to the pinion 400,

as indicated by the dotted line pivot portion in Fig. 4. Thus when the handle 390 is swung downwardly, the flattened shaft 462 will turn clockwise and engage the upwardly extending arms 484 of bellcrank feed roll hangcrs 486.

sure engagement with the platen 44' and the audit strip may thus be fedfreely between the platen and the feed rolls. I

When the lever 390 is in its normal position, the feed 7 322 downwardly to the position in which it is shown in The feed rolls 8-3 are thus removed from presi thereby, through the gear sector 398 and pinion 400, swinging the flat shaft 402 in a counterclockwise direction about its eccentric pivot, so that this shaft engages arms 418 of feed roll'hangers 420, thereby moving the rolls 13 away from the knurled portions 126 a sufficient distance that the ticket strip may be'fed through jthe. chute provided by the sheets 118 and 120 into position for subsequent feeding by means of the knurled rolls 126.. The feed roll hangers 420 are restored to normal position by return springs 422, and the handle 390 is re stored to normal position by the spring operated scissors levers 410 and 411.

- As previously mentioned, a ticket or slip may be manually inserted in the chute 132, andfor this reason the inking ribbon 124, 134 is fed from a spool 424 (Fig. 2) around a suitable 'guide post 426 in front of the ticket stt'ip,1 and has its direction reversedby a pin 428 and idler pulley 430, so as to return past another guide post 432 to the other spool-434, the return portion 1340f the ribbon lying in front of the chute 132 which is provided with suitable apertures at the printing position.

The operation-of the machine has been particularly described in connection with the description of the various kinematic trains. In general, however, the machine will be operated in the manner of a bookkeeping machine,'to

pick up the .past balance, add or subtract various amounts therefrom, and print the'new balance, together with'the item, number, date, and indicia to show the chamber of the machineoperation, and the operators initials or line spaced assuccessive items are added or subtracted,

and that upon the'last operation of the machine for. a particular account, the ticket strip is fed the additional course, line spaced one line or two lines, asdetermined bythe setting of the machine.

V Another feature of theinvention is that the item'counter is'not effectively advanced whenever an operation is performed with the repeat key-depressed. Thus, for

example,- when the machine is required to issue duplicate 7 tickets, thenumber of items entered will not be en'one-- .ously increased.

The machine is 'so constructed that the audit strip and ticket strip are readily threaded between the proper guides and the audit strip is rewound so as to maintain a complete'record of all the operations of the machine.

The various parts of the ticket feed and audit stripefeed mechanisms are suitably interlocked and provided with means to prevent misoperation of the machine. I While I have shown and described a preferred embodiment of my invention, it will be apparent that numerous variations and modifications thereof may be made without departing from the underlying principles of the invention. I therefore desire, by'the following claims, to include within the scope of the inventon all such vari-- ations and modifications by which substantially the ,re-

-sults of my invention may be obtained through the us of substantially' thesame or equivalent means. 1

'I claim: v a I 1: In a calculating machine having a main shaft and a platen the combination of feed rollers cooperable with the platen to cause feeding of a first record.strip, .a pair It will be recalled that the ticket strip may be 9' of feed rollers cooperable with a second record strip to advance the latter, means operable during each item entering machine cycle to advance the first record strip and second strip each a single line space, an operation control key, and means conditioned for operation upon depression of the control key to advance said second strip a substantially greater distance than required for line spacing, said last named means including a gear having a plurality of studs thereon, a wipe pawl mechanism cooperable with the studs, and a lost motion connection for driving said wipe'pawl mechanism from the main shaft and operable to feed the second record strip a predetermined distance depending upon the number of items entered in a column on the second record strip.

2. In a paper feeding mechanism for calculating machines having two record strips upon which identical data'is simultaneously imprinted, the combination of a platen, spring biased feed rollers pressing the first of the record strips against the platen for advancement by the rotation of the platen; a pair of spring biased feed rollers respectively engaging opposite sides of the second record strips; means for selectively disengaging the feed rollers from their respective record strips comprising a manually operable lever pivoted for movement from a central normal position to either of two record strip releasing positions; resilient means biasing said lever to its normal position; and means operable by the lever when moved away from its normal position in one direction to move the feed rollers for the first strip away from the strip against their spring bias, and when moved from normal position in the opposite direction to remove at least one of the pair of rollers normally engaging the second strip from engagement therewith against its spring bias.

3. In a platen rotating mechanism for calculating machines which have an audit strip and which issue tickets, the combination of a platen, means for rotataing the platen through a small angle for line spacing of the audit strip, feed rollers for the ticket strip, pawl and ratchet means for rotating the feed rollers for line spacing, means for rotating the feed rollers through a much larger angle for ejection of tickets, said last named means including an element moved in one direction to effect rotation of the feed rollers and ineffective to 1'0- tate the feed rollers when moved in the opposite direction, a part moved to and fro with respect to said element during each machine cycle, cooperative members on said part and element engageable with one another to cause movement of the element in the direction to rotate the feed rollers by the part only when the element is displaced from its normal position, control keys, and means controlled by the keys to move said element a distance substantially equal to the stroke of the part.

4. In a calculating machine having a main shaft, a plurality of operation determining control keys, and a printing mechanism including a platen, the combination of a ratchet wheel and a pinion secured together, mechanism including a line spacing pawl engageable with the ratchet wheel to rotate the ratchet wheel for line spacing, a gear meshing with the pinion, ticket feed rollers driven by the gear, a plurality of arcuately spaced studs on the gear, an arm mounted for pivotal movement coaxially with the gear and having a ticket feeding stroke and a retractile stroke, a wipe pawl carried by the arm and cooperable with the studs to rotate the gear in feed roller operating direction, means driven from the main shaft to cause said line spacing pawl to rotate its associated ratchet wheel during a machine cycle following depression of certain of said control keys, means controlled by the operation of other of said control keys to efiect a retractile stroke of said arm a distance greater than the arcuate spacing of said studs, and means deriving power from the main shaft to move said arm in feed roller operating direction only after it has been moved through its retractile stroke.

5. The combination set forth in claim 4, in which 16 the means for moving the arm in ticket feeding direction comprises a link having one end pivoted to the arm and having an arcuate slot near its other end, and in which a lever linked to the main shaft has a stud projecting into the arcuate slot.

6. In a calculating machine or the like having a main shaft, a frame, a platen mounted for rotation in the frame, a ratchet wheel secured to one end of the platen, and pressure feed rollers for eifecting advancing engagement of an audit strip with the platen, in combination, a pivoted paper feed lever carrying a stud, means for advancing the platen and the audit strip a single line spacing'distance, said means comprising a chain of pivoted links and levers, one end of said chain being operatively connected to the main shaft, the other end of said chain being in sliding engagement with the stud secured to the pivoted paper feed lever,'a pawl pivotally secured to the paper feed lever, means for holding the pawl in cooperative engagement with the ratchet wheel, shoulders on the paper feed lever, and a stop stud engageable with one of said shoulders and arranged to be secured to the frame in either of two positions at such distances from said shoulders respectively that upon operation of the main shaft the tooth of the pawl will pass over either one tooth or over two teeth of the ratchet wheel before one of said shoulders engages with said step stud and permits the pawl to engage the ratchet wheel and to advance the platen and audit strip either one or two line spaces.

7. In a calculating machine or the like of the type having a main shaft, a paper roll for providing an audit strip, a frame, and a platen mounted for rotation in the frame having a pair of holes therein, the combination of a ratchet wheel secured to one end of the platen, pressure feed rollers for effecting advancing engagement of the audit strip with the platen, means for advancing the platen and the audit strip a distance equal to a single tooth space of the ratchet wheel, said means comprising a pivoted feed lever having a stud thereon, a chain of pivoted links and levers, one end of said chain being operated by the main shaft during each operating cycle of the machine, and the other end of said chain being in sliding engagement with the stud on the pivoted feed lever, a pawl pivotally secured to the feed lever, means for holding the pawl in cooperative engagement with the ratchet wheel, a pair of shoulders on the paper feed lever, and a removable stop stud engageable with one of said shoulders and insertable in either of the holes in a frame plate, the holes being such distances from said shoulders that, upon operation of the main shaft, the tooth of the pawl will pass over a single tooth or two teeth of the ratchet wheel before one of said shoulders engages with said stop stud and permits the pawl to engage the ratchet wheel and to advance the platen and audit strip one or two spaces, depending upon in which of the two holes in the frame the stop stud is located.

8. In a calculating machine or the like of the type having a main shaft, a paper roll for providing an audit strip, and a ticket strip, the combination of a frame having spaced holes therein, a platen rotatable in said frame, a first ratchet wheel secured to one end of the platen, and mechanism cooperating with said ratchet Wheel for advancing the audit strip one or two spaces, means for advancing the ticket strip one space independently of the amount of advancement of the audit strip, said means comprising a bushing freely rotatable on the platen shaft, a second ratchet wheel secured to said bushing, a pivoted ticket feed lever having a stud thereon, a chain of pivoted links and levers, one end of said chain being operated by the main shaft, and the other end of said chain being in sliding engagement with a stud secured to the pivoted ticket feed lever, a pawl pivotally secured to the ticket feed lever, means for holding the pawl in cooperative engagement with the second ratchet wheel, shoulders on the ticket feed lever, and a removable stop stud engageable with said shoulder and insertable in either of the holes in the frame at such a distance from said shoulders that upon operation of the main shaft the tooth of the 'pawl will pass over a single tooth or two teeth ofthe second ratchet wheel before said shoulder engages with said stop stud and permits the pawl to engage the second ratchet wheel and to advance the ticket strip one or two spaces, depending upon the position of the stop stud.

9. Intel Calculating machine having a rock shaft oscillated dun'ng each machine cycle, a frame, and a platen rotatable in the frame to advancea paper record strip,

a paperfeeding mechanism comprising the combination of a ratchet Wheel secured to theplaten, a pawl engaging the ratchet wheel, a pawl actuating arm pivotedto the frame, means pivotally connecting the arm and the pawl, a lost motion driving connectionbetween the rock shaft and the arm, and a removable stop stud which when secured to the frame in one position limits the 12 pivotal movement of I the arm to move the pawl past a suflicient number of teeth on the ratchet wheel -to cause single line spacing and which when secured to the frame in another position similarly limits arm to cause double line spacing.

R'eferences'Cited inthe file of this patent UNITED STATES PATENTS 2,407,522 Williams r Sept. 10, 1946 the movement of the Rinsche- Feb. 8,1910 

